The “Shamrock IV.,” challenger for the America Cup, which will be defended by the “Defiance,” the ” Resolute,” or the “Vanitie,” had her first trial in the Solent the other day and did well in a light breeze. During her four – hours' sail she was accompanied by ” Shamrock III.” When moorings were cast off, a tug took the challenger and the twenty – three metre ” Shamrock ” in tow ot to Spithead. Sail was hoisted when out off the Spit Fort. The ” Shamrock IV. ” was sailed for about an hour under main and foresail. Then the jack-yarder was sent up and, a little later, a jib topsail. The ” Shamrock III. ” set corresponding sail. Afterwards topsails were lowered, the yachts were put before the wind, and spinnakers were boomed out. Finally, spinnakers were taken off and the two boats reached off free towards Southsea Beach under mainsails and headsails. From Bembridge they came back close- hauled, Despite the fact that the 23-metre ” Shamrock ” was sailing at her best and the ” Shamrock IV.'s ” new canvas was stretching, the challenger drew away steadily.